/* Bonnie AI 官网样式
   设计取向：深海军蓝打底 + 天蓝高光（取自 Bonnie 图标里的棒球帽与星星），
   米白文字保证长段中文的可读性。全部系统字体，不引外链（审核环境可能无外网）。 */

:root {
  --navy-900: #07111f;
  --navy-800: #0a1626;
  --navy-700: #0e2136;
  --sky-400: #6ec6e8;
  --sky-300: #9ad9f2;
  --sky-600: #3a9cc4;
  --cream: #f7e9d7;
  --text: #e8eef7;
  --text-dim: #a8b8cc;
  --line: rgba(110, 198, 232, 0.18);
  --radius: 18px;
  --wrap: 1120px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI",
    system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* 锚点跳转要避开 sticky 顶栏（否则标题被压在栏下） */
section[id] { scroll-margin-top: 84px; }

body {
  margin: 0;
  background: var(--navy-800);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--sky-300); text-decoration: none; }
a:hover { color: #fff; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: rgba(7, 17, 31, 0.72);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 66px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-logo {
  border-radius: 10px;
  box-shadow: 0 0 0 1px var(--line);
}

.brand-name { font-size: 19px; }
.brand-ai { color: var(--sky-400); }

.nav {
  display: flex;
  gap: 26px;
  margin-left: auto;
  font-size: 15px;
}

.nav a { color: var(--text-dim); }
.nav a:hover { color: var(--sky-300); }

.header-actions { display: flex; align-items: center; }

.lang-toggle {
  min-width: 46px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(110, 198, 232, 0.08);
  color: var(--sky-300);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.lang-toggle:hover {
  border-color: var(--sky-600);
  background: rgba(110, 198, 232, 0.16);
  color: #fff;
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 104px 0 96px;
  background:
    radial-gradient(1000px 520px at 78% -12%, rgba(110, 198, 232, 0.22), transparent 62%),
    radial-gradient(760px 420px at 8% 108%, rgba(247, 233, 215, 0.10), transparent 60%),
    linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 60%, var(--navy-800) 100%);
}

.hero-glow {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 70%;
  background: radial-gradient(560px 240px at 62% 8%, rgba(110, 198, 232, 0.20), transparent 70%);
  filter: blur(30px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  gap: 56px;
  align-items: center;
}

.hero-copy { min-width: 0; }

/* 首屏右侧：纯 CSS 画的工作台模拟图（不放产品截图，避免与实际界面版本脱节） */
.hero-visual { min-width: 0; }

.mock {
  border: 1px solid rgba(110, 198, 232, 0.22);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(16, 36, 58, 0.96), rgba(9, 20, 34, 0.96));
  box-shadow: 0 34px 70px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
  transform-origin: 60% 50%;
}

.mock-head {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  border-bottom: 1px solid rgba(110, 198, 232, 0.14);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(110, 198, 232, 0.35);
}

.mock-title {
  margin-left: 8px;
  font-size: 11.5px;
  color: rgba(168, 184, 204, 0.8);
  letter-spacing: 0.02em;
}

.mock-body { padding: 18px 20px 20px; }

.mock-label {
  margin: 0 0 9px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(110, 198, 232, 0.85);
}
.mock-label:not(:first-child) { margin-top: 18px; }

.mock-line {
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, rgba(110, 198, 232, 0.32), rgba(110, 198, 232, 0.10));
  margin-bottom: 7px;
}
.mock-line.w100 { width: 100%; }
.mock-line.w85 { width: 85%; }
.mock-line.w60 { width: 60%; }

.mock-covers { display: flex; gap: 9px; align-items: flex-end; }

.cover {
  display: grid;
  place-items: center;
  border-radius: 7px;
  border: 1px solid rgba(110, 198, 232, 0.28);
  background: linear-gradient(160deg, rgba(110, 198, 232, 0.22), rgba(110, 198, 232, 0.05));
  color: rgba(232, 238, 247, 0.75);
  font-size: 10px;
  letter-spacing: 0.06em;
}
.cover.c34 { width: 48px; height: 64px; }
.cover.c916 { width: 40px; height: 71px; }
.cover.c43 { width: 58px; height: 43px; }

.mock-chips { display: flex; flex-wrap: wrap; gap: 7px; }

.mock-chips span {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(110, 198, 232, 0.24);
  background: rgba(110, 198, 232, 0.10);
  font-size: 11.5px;
  color: var(--text);
}

.mock-chips .chip-more {
  background: transparent;
  color: var(--sky-400);
  border-style: dashed;
}

.mock-status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed rgba(110, 198, 232, 0.16);
  font-size: 11.5px;
  color: rgba(168, 184, 204, 0.85);
}

.pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #5fd39a;
  box-shadow: 0 0 0 4px rgba(95, 211, 154, 0.16);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(95, 211, 154, 0.14); }
  50% { box-shadow: 0 0 0 7px rgba(95, 211, 154, 0.05); }
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sky-400);
}

.hero h1 {
  margin: 0 0 22px;
  font-size: clamp(32px, 5.2vw, 58px);
  line-height: 1.22;
  letter-spacing: -0.5px;
  font-weight: 800;
  background: linear-gradient(180deg, #ffffff 0%, #cfe4f4 72%, #a9cbe0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin: 0 0 34px;
  max-width: 720px;
  font-size: clamp(16px, 1.7vw, 19px);
  color: var(--text-dim);
}

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.16s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: linear-gradient(180deg, var(--sky-300), var(--sky-600));
  color: #04121f;
  box-shadow: 0 10px 26px rgba(58, 156, 196, 0.32);
}
.btn-primary:hover {
  color: #04121f;
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(58, 156, 196, 0.42);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.btn-ghost:hover { border-color: var(--sky-600); color: #fff; }

.btn-lg { height: 54px; padding: 0 34px; font-size: 16px; }

.hero-meta {
  margin: 30px 0 0;
  font-size: 13.5px;
  color: rgba(168, 184, 204, 0.78);
}

/* ---------- 通用区块 ---------- */
.section { padding: 92px 0; border-top: 1px solid rgba(110, 198, 232, 0.10); }
.section-alt {
  background: linear-gradient(180deg, rgba(14, 33, 54, 0.55), rgba(10, 22, 38, 0.2));
}

.section-head { max-width: 760px; margin-bottom: 52px; }

.section-head h2 {
  margin: 0 0 14px;
  font-size: clamp(25px, 3.2vw, 36px);
  line-height: 1.32;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.section-sub { margin: 0; color: var(--text-dim); }

/* ---------- 能力卡片 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.card {
  padding: 26px 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(110, 198, 232, 0.38);
  background: linear-gradient(180deg, rgba(110, 198, 232, 0.10), rgba(255, 255, 255, 0.02));
}

.card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: rgba(110, 198, 232, 0.14);
  border: 1px solid var(--line);
  color: var(--sky-300);
  font-size: 17px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 18.5px;
  font-weight: 650;
}

.card p { margin: 0; color: var(--text-dim); font-size: 15px; }

/* ---------- 三步流程 ---------- */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 28px 24px 30px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(7, 17, 31, 0.45);
}

.step-no {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--sky-400);
  font-variant-numeric: tabular-nums;
}

.step h3 { margin: 0 0 10px; font-size: 18px; font-weight: 650; }
.step p { margin: 0; color: var(--text-dim); font-size: 15px; }

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.about-text p { margin: 0 0 18px; color: var(--text-dim); }
.about-text p:last-child { margin-bottom: 0; }

.about-brand {
  padding-left: 16px;
  border-left: 2px solid var(--sky-600);
  color: var(--cream) !important;
  font-size: 15px;
}

.facts {
  margin: 0;
  padding: 8px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.028);
}

.fact {
  display: flex;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(110, 198, 232, 0.14);
  font-size: 14.5px;
}
.fact:last-child { border-bottom: 0; }

.fact dt {
  flex: 0 0 84px;
  color: rgba(168, 184, 204, 0.72);
}

.fact dd { margin: 0; color: var(--text); word-break: break-word; }
.fact dd a, .footer-line a { color: inherit; text-decoration: underline; text-decoration-color: rgba(255,255,255,.35); text-underline-offset: 3px; }
.fact dd a:hover, .footer-line a:hover { color: var(--sky-300); }

/* ---------- 行动区 ---------- */
.section-cta {
  text-align: center;
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(110, 198, 232, 0.16), transparent 66%),
    linear-gradient(180deg, var(--navy-900), var(--navy-800));
}

.cta-inner { max-width: 720px; }

.cta-inner h2 {
  margin: 0 0 16px;
  font-size: clamp(25px, 3.4vw, 38px);
  font-weight: 750;
}

.cta-inner p { margin: 0 0 30px; color: var(--text-dim); }

.cta-mail {
  margin: 20px 0 0 !important;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--sky-300) !important;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--navy-900);
  padding: 30px 0 34px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 650;
  font-size: 15px;
}
.footer-brand img { border-radius: 8px; }

.footer-line {
  margin: 0;
  font-size: 13px;
  color: rgba(168, 184, 204, 0.72);
}

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
}

@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 30px; }
  .nav { display: none; }
  .hero { padding: 76px 0 72px; }
  .section { padding: 72px 0; }
}

@media (max-width: 520px) {
  .header-inner { height: 60px; gap: 12px; }
  .brand-name { font-size: 17px; }
  .btn { width: 100%; }
  .cta-row { gap: 12px; }
  .facts { padding: 4px 16px; }
  .fact { flex-direction: column; gap: 4px; }
  .fact dt { flex: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}